tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate

Also known as: 1-Boc-3,4-dihydro-2H-pyridine, 1-N-Boc-3,4-dihydro-2H-pyridine, 3,4-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester, N-tert-butyloxycarbonyl-1,2,3,4-tetrahydropyridine, tert-butyl 1,2,3,4-tetrahydro-1-pyridinecarboxylate, tert-butyl 3,4-dihydro-2H-pyridine-1-carboxylate

tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate (CAS 131667-57-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H17NO2 and a molecular weight of 183.24700 g/mol. Key properties include a boiling point of 254ºC, a density of 1.029 and a flash point of 107ºC. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed and H400 — Very toxic to aquatic life. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 131667-57-7
Jingsj CID: J-1510908-7
Molecular Formula: C₁₀H₁₇NO₂
Molecular Weight: 183.24700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	254ºC
Density	1.029
Flash Point	107ºC
Exact Mass	183.12600
PSA	29.54000
LogP	2.46890
Vapor Pressure	0.018mmHg at 25°C
Refractive Index	1.485
Storage Conditions	2-8°C

GHS Safety & Compliance

Acute Toxicity / Environmental HazardSignal word: Danger

H301 — Toxic if swallowed
H400 — Very toxic to aquatic life

Customs & Trade Information

HS Code	2933399090
Summary	2933399090. other compounds containing an unfused pyridine ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Frequently Asked Questions

What is the CAS number of tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate?

The CAS number of tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate is 131667-57-7.

What are the molecular formula and molecular weight of tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate?

tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate has molecular formula C10H17NO2 and molecular weight 183.24700 g/mol.

Is tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate hazardous?

tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate has GHS signal word Danger and hazard statements H301 — Toxic if swallowed; H400 — Very toxic to aquatic life.

What are the upstream and downstream products of tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate?

For tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate, Upstream Products: 1-Boc-2-piperidone, 4-(Trifluoromethoxy)phenol, tert-Butyl 4-((methylsulfonyl)oxy)piperidine-1-carboxylate; Downstream Products: N-Boc-2-piperidinecarboxylic acid, tert-butyl (2S)-2-(hydroxymethyl)piperidine-1-carboxylate, tert-Butyl 7-oxa-3-azabicyclo[4.1.0]heptane-3-carboxylate.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "tert-butyl 3,4-dihydropyridine-1(2H)-carboxylate (CAS 131667-57-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1510908-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.